Table of Contents

1 Ethernet OAM Configuration Commands· 1-1

OAM Configuration Commands· 1-1

display oam·· 1-1

display oam configuration· 1-5

display oam critical-event 1-7

display oam link-event 1-7

oam enable· 1-10

oam errored-frame period· 1-10

oam errored-frame threshold· 1-11

oam errored-frame-period period· 1-12

oam errored-frame-period threshold· 1-12

oam errored-frame-seconds period· 1-13

oam errored-frame-seconds threshold· 1-14

oam loopback· 1-15

oam mode· 1-16

reset oam·· 1-16

 

OAM Configuration Commands

display oam

Syntax

display oam { local | remote } [ interface interface-type interface-number ]

View

Any view

Default Level

2: System level

Parameters

local: Displays the Ethernet OAM connection information of the local end.

remote: Displays the Ethernet OAM connection information of the remote end..

interface interface-type interface-number: Specify a port by its type and number..

Description

Use the display oam command to display the information about an Ethernet OAM connection, including connection status, information contained in Ethernet OAM packet header, and Ethernet OAM packet statistics.

If you do not specify the interface keyword, this command displays the information about all the Ethernet OAM connections.

Related commands: reset oam.

Examples

# Display the local Ethernet OAM connection information.

<Sysname> display oam local

Port        : GigabitEthernet2/0/1

Link Status : Up

EnableStatus              : Enable

Local_oam_mode            : Active      Local_pdu              : ANY

Local_mux_action          : FWD         Local_par_action       : DISCARD

Port        : Ethernet1/2

Link Status : Down

EnableStatus              : Enable

Local_oam_mode            : Active      Local_pdu              : LF_INFO

Local_mux_action          : FWD         Local_par_action       : FWD

Table 1-1 display oam local command output description

Field	Description
Port	Port index
Link Status	Link status
EnableStatus	Ethernet OAM state (enabled or disabled)
Local_oam_mode	Local Ethernet OAM mode, which can be: l      Active, indicating the port operates in the active Ethernet OAM mode l      Passive, indicating the port operates in the passive Ethernet OAM mode
Local_pdu	The way in which Ethernet OAMPDUs of different types are processed locally. This field can be: l      RX_INFO, indicating the port only receives Information OAMPDUs and does not send Ethernet OAMPDUs. l      LF_INFO, indicating the port only sends the Information OAMPDUs without Information TLV triplets and with their link error flag bits being set l      INFO, indicating the port only sends and receives Information OAMPDUs l      ANY, indicating the port sends and receives Ethernet OAMPDUs of any types
Local_mux_action	Local sending mode, which can be: l      FWD, indicating the port can send any packets l      DISCARD, indicating the port only sends Ethernet OAMPDUs
Local_par_action	Local receiving mode, which can be: l      FWD, indicating the port can receive any packets l      DISCARD, indicating the port only receives Ethernet OAMPDUs l      LB, indicating Ethernet OAM loopback testing is enabled on the port. In this case, all the packets other than Ethernet OAMPDUs received are returned to their sources along the ways they come.

 

# Display the information about the Ethernet OAM connection established on the local port GigabitEthernet 2/0/1.

<Sysname> display oam local interface GigabitEthernet 2/0/1

Port        : GigabitEthernet2/0/1

Link Status : Up

EnableStatus              : Enable

Local_oam_mode            : Active      Local_pdu              : ANY

Local_mux_action          : FWD         Local_par_action       : FWD

 

OAMLocalFlagsField :

--------------------------------------------------------------------------

Link Fault                : 0           Dying Gasp             : 0

Critical Event            : 0           Local Evaluating       : COMPLETE

Remote Evaluating         : COMPLETE

 

Packets statistic :

Packets                        Send                   Receive

--------------------------------------------------------------------------

OAMPDU                         645                    648

OAMInformation                 645                    648

OAMEventNotification           0                      --

OAMUniqueEventNotification     --                     0

OAMDuplicateEventNotification  --                     0

Table 1-2 display oam local interface command output description

Field	Description
Port	Port index
Link Status	Link status
EnableStatus	Ethernet OAM state (enabled or disabled)
Local_oam_mode	Local Ethernet OAM mode. Refer to Table 1-1 for more.
Local_pdu	The way in which Ethernet OAMPDUs of different types are processed locally. Refer to Table 1-1 for more.
Local_mux_action	Local sending mode. Refer to Table 1-1 for more.
Local_par_action	Local receiving mode. Refer to Table 1-1 for more.
OAMLocalFlagsField	Local flags inserted in the  local flag fields of the Ethernet OAMPDUs sent
Link Fault	Indicates whether Ethernet OAM link error events occurred. A value of 0 indicates no Ethernet OAM error event occurs; a value of 1 indicates Ethernet OAM error event occurrences.
Dying Gasp	Indicate whether Dying Gasp events occurred. A value of 0 indicates no Dying Gasp event occurs; a value of 1 indicates Dying Gasp event occurrences.
Critical Event	Indicates whether Critical Events occurred. A value of 0 indicates no Critical event occurs; a value of 1 indicates Critical event occurrences.
Local Evaluating	Indicates whether the local-to-remote configuration negotiation is complete.
Remote Evaluating	Indicates whether the remote-to-local configuration negotiation is complete.
Packets statistic	Statistics on Ethernet OAMPDUs sent and received
OAMPDU	Total number of the Ethernet OAMPDUs sent and received
OAMInformation	Number of the Information OAMPDUs sent and received
OAMEventNotification	Number of the Event notification OAMPDUs sent and received
OAMUniqueEventNotification	Number of the unduplicated Event notification OAMPDUs sent or received uniquely
OAMDuplicateEventNotification	Number of the duplicate Event notification OAMPDUs sent or received

 

# Display the peer Ethernet OAM connection information.

<Sysname> display oam remote

Port        :GigabitEthernet2/0/1

Link Status :Up

Information of the latest received OAM packet:

OAMRemoteMACAddress       : 00e0fc003552

OAMRemotePDUConfiguration : 1500

Remote_mux_action         : FWD         Remote_par_action      : FWD

Table 1-3 display oam remote command output description

Field	Description
Port	Port index
Link Status	Link status
Information of the latest received OAM packet	Information about the latest received Ethernet OAMPDU
OAMRemoteMACAddress	MAC address of the Ethernet OAM peer
OAMRemotePDUConfiguration	Maximum Ethernet OAMPDU size allowed
Remote_mux_action	Peer sending mode. Refer to Table 1-1 for more.
Remote_par_action	Peer receiving mode. Refer to Table 1-1 for more.

 

# Display the Ethernet OAM information about the peer port GigabitEthernet 2/0/1.

<Sysname> display oam remote interface GigabitEthernet 2/0/1

Port        : GigabitEthernet2/0/1

Link Status : Up

Information of the latest received OAM packet:

OAMRemoteMACAddress       : 00e0-fd73-6502

OAMRemotePDUConfiguration : 1500

 

OAMRemoteState :

--------------------------------------------------------------------------

Remote_mux_action         : FWD         Remote_par_action      : FWD

 

OAMRemoteConfiguration :

--------------------------------------------------------------------------

OAM Mode                  : Active      Unidirectional Support : YES

Loopback Support          : YES         Link Events            : YES

Variable Retrieval        : NO

 

OAMRemoteFlagsField :

--------------------------------------------------------------------------

Link Fault                : 0           Dying Gasp             : 0

Critical Event            : 0           Local Evaluating       : COMPLETE

Remote Evaluating         : COMPLETE

Table 1-4 display oam remote interface command output description

Field	Description
Port	Port index
Link Status	Link status
Information of the latest received OAM packet	Information about the latest received Ethernet OAMPDU
OAMRemoteMACAddress	MAC address of the Ethernet OAM peer
OAMRemotePDUConfiguration	Maximum Ethernet OAMPDU size allowed
OAMRemoteState	State of the Ethernet OAM peer
Remote_mux_action	Peer sending mode. Refer to Table 1-1 for more.
Remote_par_action	Peer receiving mode. Refer to Table 1-1 for more.
OAMRemoteConfiguration	Configuration of the peer Ethernet OAM entity
OAM Mode	Ethernet OAM mode
Unidirectional Support	Indicates whether unidirectional transmission is supported (YES or NO)
Loopback Support	Indicates whether Ethernet OAM loopback testing is supported (YES or NO)
Link Events	Indicates whether Ethernet OAM link error events are supported (YES or NO)
Variable Retrieval	Indicates whether MIB variable retrieval is supported (YES or NO)
OAMRemoteFlagsField	Values of the peer Ethernet OAM flag fields in OAM packets
Link Fault	Indicates whether Ethernet OAM link error events occurred. Refer to Table 1-2 for more.
Dying Gasp	Indicate whether Dying Gasp events occurred. Refer to Table 1-2 for more.
Critical Event	Indicate whether Critical events occurred. Refer to Table 1-2 for more.
Local Evaluating	Indicates whether the local-to-remote configuration negotiation is complete.
Remote Evaluating	Indicates whether the remote-to-local configuration negotiation is complete.

 

display oam configuration

Syntax

display oam configuration

View

Any view

Default Level

2: System level

Parameters

None

Description

Use the display oam configuration command to display global Ethernet OAM configuration, including the periods and thresholds for Ethernet OAM link error event detection.

Related commands: oam errored-frame period, oam errored-frame threshold, oam errored-frame-period period, oam errored-frame-period threshold, oam errored-frame-seconds period, oam errored-frame-seconds threshold.

Examples

# Display global Ethernet OAM configuration.

<Sysname> display oam configuration

Configuration of the link event window/threshold :

--------------------------------------------------------------------------

Errored-symbol Event period(in seconds)           :     1

Errored-symbol Event threshold                    :     1

Errored-frame Event period(in seconds)            :     1

Errored-frame Event threshold                     :     1

Errored-frame-period Event period(in ms)          :     1000

Errored-frame-period Event threshold              :     1

Errored-frame-seconds Event period(in seconds)    :     60

Errored-frame-seconds Event threshold             :     1

Table 1-5 display oam configuration command output description

Field	Description
Configuration of the link event window/threshold	Detection intervals and triggering thresholds configured for link events
Errored-symbol Event period (in seconds)	Errored symbol detection interval, which defaults to one second.
Errored-symbol Event threshold	Errored symbol event triggering threshold, which defaults to 1.
Errored-frame Event period (in seconds)	Errored frame detection interval, which defaults to one second.
Errored-frame Event threshold	Errored frame event triggering threshold, which defaults to 1.
Errored-frame-period Event period (in ms)	Errored frame period detection interval, which defaults to 1000 milliseconds.
Errored-frame-period Event threshold	Errored frame period event triggering threshold, which defaults to 1.
Errored-frame-seconds Event period (in seconds)	Errored frame seconds detection interval, which defaults to 60 seconds.
Errored-frame-seconds Event threshold	Errored frame seconds event triggering threshold, which defaults to 1.

 

display oam critical-event

Syntax

display oam critical-event [ interface interface-type interface-number]

View

Any view

Default Level

2: System level

Parameters

interface interface-type interface-number: Specifies a port by its type and number.

Description

Use the display oam critical-event command to display the statistics on critical Ethernet OAM link events occurred on a port.

If you do not specify the interface keyword, this command displays the statistics on the critical Ethernet OAM link events occurred on all the ports of the switch.

Examples

# Display the statistics on critical Ethernet OAM link events occurred on all the ports.

<Sysname> display oam critical-event

Port        : GigabitEthernet2/0/1

Link Status : Up

Event statistic :

-------------------------------------------------------------------------

Link Fault    :0    Dying Gasp    : 0    Critical Event    : 0

Table 1-6 display oam critical-event command output description

Field	Description
Port	Port index
Link Status	Link status
Event statistic	Statistics on critical Ethernet OAM link events
Link Fault	Indicates whether Ethernet OAM link error events occurred. Refer to Table 1-2 for more.
Dying Gasp	Indicates whether Dying Gasp events occurred. Refer to Table 1-2 for more.
Critical Event	Indicates whether Critical events occurred. Refer to Table 1-2 for more.

 

display oam link-event

Syntax

display oam link-event { local | remote } [ interface interface-type interface-number ]

View

Any view

Default Level

2: System level

Parameters

local: Displays the statistics on the local Ethernet OAM link error events.

remote: Displays the statistics on the peer Ethernet OAM link error events.

interface interface-type interface-number: Specifies a port by its type and number.

Description

Use the display oam link-event command to display the statistics on Ethernet OAM link error events occurred on a local port or a peer port. Ethernet OAM link error events include errored symbol events, errored frame events, errored frame period events, and errored frame seconds events.

If you do not specify the interface keyword, this command displays the statistics on the Ethernet OAM link error events occurred on all the local/peer ports.

Related commands: display oam configuration.

Examples

# Display the statistics on Ethernet OAM link error events occurred on all the local ports.

<Sysname> display oam link-event local

Port        : GigabitEthernet2/0/1

Link Status : Up

 

OAMLocalErrFrameEvent : (ms = milliseconds)

--------------------------------------------------------------------------

Event Time Stamp          : 3539        Errored Frame Window  : 10(100ms)

Errored Frame Threshold   : 5           Errored Frame         : 1488111

Error Running Total       : 260908758   Event Running Total   : 307

 

OAMLocalErrFramePeriodEvent :

--------------------------------------------------------------------------

Event Time Stamp          : 3539        Errored Frame Window  : 976500

Errored Frame Threshold   : 1           Errored Frame         : 1042054

Error Running Total       : 260909151   Event Running Total   : 471

 

OAMLocalErrFrameSecsSummaryEvent : (ms = milliseconds)

--------------------------------------------------------------------------

Event Time Stamp : 3389

Errored Frame Second Summary Window     : 600(100ms)

Errored Frame Second Summary Threshold  : 1

Errored Frame Second Summary            : 60

Error Running Total       : 292         Event Running Total   : 5

Table 1-7 display oam link-event local command output description

Field	Description
Port	Port index
Link Status	Link status
OAMLocalErrFrameEvent : (ms = milliseconds)	Information about local errored frame events. l      Event Time Stamp: time when an errored frame event occurred (in 100 milliseconds). l      Errored Frame Window: Error frame detection interval (in 100 milliseconds). l      Errored Frame Threshold: error threshold that triggers an errored frame event. l      Errored Frame: the number of detected error frames over the specific detection interval. l      Error Running Total: the total number of error frames. l      Event Running Total: the total number of errored frame events that have occurred.
OAMLocalErrFramePeriodEvent	Information about local error frame period events: l      Event Time Stamp: time when an errored frame event occurred (in 100 milliseconds). l      Errored Frame Window: maximum number of 64-byte frames that can be transmitted through an Ethernet port over the configured error frame period detection interval. See oam errored-frame-period period command for more information. l      Errored Frame Threshold: error threshold that triggers an error frame period event. l      Errored Frame: the number of detected error frames over a detection interval. l      Error Running Total: the total number of error frames that have detected. l      Event Running Total: the total number of error frame period events.
OAMLocalErrFrameSecsSummaryEvent : (ms = milliseconds)	Information about local errored frame seconds events: l      Event Time Stamp: time when an error frame seconds event occurred (in terms of 100 milliseconds). l      Errored Frame Second Summary Window: error frame second detection interval (in 100 milliseconds). l      Errored Frame Second Summary Threshold: error threshold that triggers an error frame seconds event. l      Errored Frame Second Summary: the number of detected error frame seconds over a detection interval. l      Error Running Total: the total number of error frame seconds. l      Event Running Total: the total number of error frame seconds events that have occurred.

 

oam enable

Syntax

oam enable

undo oam enable

View

Ethernet port view

Default Level

2: System level

Parameters

None

Description

Use the oam enable command to enable Ethernet OAM on an the Ethernet port.

Use the undo oam enable command to disable Ethernet OAM on the Ethernet port.

By default, Ethernet OAM is disabled on all Ethernet ports.

After you enable Ethernet OAM for an Ethernet port, the port attempts to establish an OAM connection to the peer in the predetermined mode.

Related commands: oam mode.

Examples

# Enable OAM on GigabitEthernet 2/0/1.

<Sysname> system-view

[Sysname] interface GigabitEthernet 2/0/1

[Sysname-GigabitEthernet2/0/1] oam enable

oam errored-frame period

Syntax

oam errored-frame period period-value

undo oam errored-frame period

View

System view

Default Level

2: System level

Parameters

period-value: Errored frame detection interval, ranging from 1 to 60 (in seconds).

Description

Use the oam errored-frame period command to set the errored frame detection interval.

Use the undo oam errored-frame period command to restore the default.

By default, the errored frame detection interval is one second.

An error frame event occurs when a errored frame detection interval expires and the number of the frame errors occurred on an Ethernet port is larger than (or equal to) the errored frame event triggering threshold.

The errored frame detection interval applies to all the Ethernet ports on which OAM connections are established.

Related commands: oam errored-frame threshold, display oam link-event, display oam configuration.

Examples

# Set the errored frame detection interval to 10 seconds.

<Sysname> system-view

[Sysname] oam errored-frame period 10

oam errored-frame threshold

Syntax

oam errored-frame threshold threshold-value

undo oam errored-frame threshold

View

System view

Default Level

2: System level

Parameters

threshold-value: Errored frame event triggering threshold, ranging from 0 to 4294967295.

Description

Use the oam errored-frame threshold command to set the errored frame event triggering threshold.

Use the undo oam errored-frame threshold command to restore the default.

By default, the errored frame event triggering threshold is 1.

An errored frame event occurs when a errored frame detection interval expires and the number of the frame errors occurred on an Ethernet port is larger than (or equal to) the errored frame event triggering threshold.

The errored frame event triggering threshold configured applies to all the Ethernet ports on which Ethernet OAM connections are established.

Related commands: oam errored-frame period, display oam link-event, display oam configuration.

Examples

# Set the errored frame event triggering threshold to 100.

<Sysname> system-view

[Sysname] oam errored-frame threshold 100

oam errored-frame-period period

Syntax

oam errored-frame-period period period-value

undo oam errored-frame-period period

View

System view

Default Level

2: System level

Parameters

period-value: Errored frame period detection interval, ranging from 100 to 60,000 (in milliseconds).

Description

Use the oam errored-frame-period period command to set the errored frame period detection interval.

Use the undo oam errored-frame-period period command to restore the default.

By default, the errored frame period detection interval is 1000 milliseconds.

As for errored frame period event detection, the system first uses the following expression to convert the errored frame period detection interval to the maximum number of 64-byte frames that can be transmitted through an Ethernet port in the period:

bandwidth * period / (64 * 8 * 1000),

where bandwidth is the port bandwidth (in bps) and “period” is the configured period (in milliseconds).

A errored frame period event occurs when a errored frame period detection interval expires and the number of the frame errors occurred on an Ethernet port is larger than (or equal to) the errored frame period event triggering threshold.

The errored frame period detection interval configured applies to all the Ethernet ports on which OAM connections are established.

Related commands: oam errored-frame-period threshold, display oam link-event, display oam configuration.

Examples

# Set the errored frame period detection interval to 10 seconds.

<Sysname> system-view

[Sysname] oam errored-frame-period period 10000

oam errored-frame-period threshold

Syntax

oam errored-frame-period threshold threshold-value

undo oam errored-frame-period threshold

View

System view

Default Level

2: System level

Parameters

threshold-value: Errored frame period event triggering threshold, ranging from 0 to 4294967295.

Description

Use the oam errored-frame-period threshold command to set the errored frame period event triggering threshold.

Use the undo oam errored-frame-period threshold command to restore the default.

By default, the errored frame period event triggering threshold is 1.

A errored frame period event occurs when a errored frame period detection interval expires and the number of the frame errors occurred on an Ethernet port is larger than (or equal to) the errored frame period event triggering threshold.

The errored frame period event triggering threshold configured applies to all the Ethernet ports on which OAM connections are established.

Related commands: oam errored-frame-period period, display oam link-event, display oam configuration.

Examples

# Set the errored frame period event triggering threshold to 100.

<Sysname> system-view

[Sysname] oam errored-frame-period threshold 100

oam errored-frame-seconds period

Syntax

oam errored-frame-seconds period period-value

undo oam errored-frame-seconds period

View

System view

Default Level

2: System level

Parameters

period-value: Errored frame seconds detection interval, ranging from 10 to 900 (in seconds).

Description

Use the oam errored-frame-seconds period command to set the errored frame seconds detection interval.

Use the undo oam errored-frame-seconds period command to restore the default.

By default, the errored frame seconds detection interval is 60 seconds.

A errored frame seconds event occurs when a errored frame seconds detection interval expires and the number of the error seconds of an Ethernet port is larger than (or equal to) the errored frame seconds event triggering threshold. (A second is called an error second if error frames occur in the second.)

The errored frame seconds detection interval configured applies to all the Ethernet ports on which Ethernet OAM connections are established.

Related commands: oam errored-frame-seconds threshold, display oam link-event, display oam configuration.

Examples

# Set the errored frame seconds detection interval to 100 seconds.

<Sysname> system-view

[Sysname] oam errored-frame-seconds period 100

oam errored-frame-seconds threshold

Syntax

oam errored-frame-seconds threshold threshold-value

undo oam errored-frame-seconds threshold

View

System view

Default Level

2: System level

Parameters

threshold-value: Errored frame seconds event triggering threshold, ranging from 0 to 900.

Description

Use the oam errored-frame-seconds threshold command to set the errored frame seconds event triggering threshold.

Use the undo oam errored-frame-seconds threshold command to restore the default.

By default, the errored frame seconds event triggering threshold is 1.

A errored frame seconds event occurs when a errored frame seconds detection interval expires and the number of the error seconds of an Ethernet port is larger than (or equal to) the errored frame seconds event triggering threshold. (A second is called an error second if error frames occur in the second.)

The errored frame seconds event triggering threshold configured applies to all the Ethernet ports on which Ethernet OAM connections are established.

Related commands: oam errored-frame-seconds period, display oam link-event, display oam configuration.

Examples

# Set the errored frame seconds event triggering threshold to 100.

<Sysname> system-view

[Sysname] oam errored-frame-seconds threshold 100

oam loopback

Syntax

oam loopback

undo oam loopback

View

Ethernet port view

Default Level

2: System level

Parameters

None

Description

Use the oam loopback command to enable Ethernet OAM loopback testing on an Ethernet port.

Use the undo loopback command to disable Ethernet OAM loopback testing.

By default, Ethernet OAM loopback testing is disabled.

Note that:

l          Ethernet OAM loopback testing is available only after the Ethernet OAM connection is established.

l          Ethernet OAM loopback testing can be performed by Ethernet OAM entities operating in the active Ethernet OAM mode only.

l          Ethernet OAM loopback testing is available only when it is supported on both the local port and the peer port.

l          Enabling Ethernet OAM loopback testing interrupts data communications. After Ethernet OAM loopback testing is disabled, all the ports involved will be shut down and then brought up.

l          Ethernet OAM loopback testing is disabled when you execute the undo oam enable command to disable Ethernet OAM, when you execute the undo oam loopback command to disable Ethernet OAM loopback testing, or when the Ethernet OAM connection is timed out.

Related commands: oam enable, oam mode.

Examples

# Enable Ethernet OAM loopback testing on GigabitEthernet2/0/1.

<Sysname> system-view

[Sysname] interface GigabitEthernet 2/0/1

[Sysname-GigabitEthernet2/0/1] oam mode active

[Sysname-GigabitEthernet2/0/1] oam enable

[Sysname-GigabitEthernet2/0/1] oam loopback

oam mode

Syntax

oam mode { active | passive }

View

Ethernet port view

Default Level

2: System level

Parameters

active: Specifies the active Ethernet OAM mode.

passive: Specifies the passive Ethernet OAM mode.

Description

Use the oam mode command to set the Ethernet OAM operating mode for an Ethernet port. By default, an Ethernet OAM-enabled Ethernet port operates in the active Ethernet OAM mode.

Note that:

l          No Ethernet OAM connection can be established between two Ethernet ports operating in the passive Ethernet OAM mode.

l          For an Ethernet OAM-enabled Ethernet port, the Ethernet OAM operating mode cannot be changed. To do this, you need to disable Ethernet OAM on the port first.

Related commands: oam enable.

Examples

# Configure GigabitEthernet 2/0/1 to operate in the active Ethernet OAM mode.

<Sysname> system-view

[Sysname] interface GigabitEthernet 2/0/1

[Sysname-GigabitEthernet2/0/1] oam mode active

reset oam

Syntax

reset oam [ interface interface-type interface-number ]

View

User view

Default Level

2: System level

Parameters

interface interface-type interface-number: Specifies a port by its type and number.

Description

Use the reset oam command to clear the statistics on Ethernet OAM packets and Ethernet OAM link error events of an Ethernet port.

If you do not specify the interface keyword, this command clears the statistics on Ethernet OAM packets and Ethernet OAM link error events of all the ports.

Related commands: display oam, display oam link-event.

Examples

# Clear the statistics on Ethernet OAM packets and Ethernet OAM link error events of all the ports.

<Sysname> reset oam